When I was growing up my father, ahem, kept Reading Material in the bathroom.
Of course I grew up doing the same even tho I am female.
Now that I have reached Old Fartdom, where my time on the Throne is best expressed thru Baseball Inning time, my answer is that it's not only men who do this.
I have an extensive bathroom library. Folks can acquire a decent education by spending time in my
rest (reading) room.